BEGIN:VCALENDAR VERSION:2.0 PRODID:-//School of Freshwater Sciences - ECPv6.15.20//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:School of Freshwater Sciences X-ORIGINAL-URL:https://uwm.edu/freshwater X-WR-CALDESC:Events for School of Freshwater Sciences REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20230312T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20231105T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20240310T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20241103T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20250309T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20251102T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20260308T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20261101T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20270314T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20271107T070000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260427T150000 DTEND;TZID=America/Chicago:20260427T155000 DTSTAMP:20260513T193001 CREATED:20260421T162941Z LAST-MODIFIED:20260421T163020Z UID:10000183-1777302000-1777305000@uwm.edu SUMMARY:Freshwater Colloquium – Small Organisms Big Impact: Microbial Insights from the Mississippi River to Caribbean Reefs DESCRIPTION:Join the School of Freshwater Sciences for a Colloquium with guest speaker: Dr. Michael Henson \nMicroorganisms drive nutrient cycling\, regulate ecosystem productivity\, and respond quickly to environmental change\, making them strong indicators of ecosystem health. In this seminar\, we will discuss how microbial community structure and assembly reveal patterns of environmental organization across large spatial scales\, and how shifts in core microbial taxa reflect underlying ecological processes rather than simple changes in nutrient levels\, using the Mississippi River as a case study. These patterns provide insight into how large rivers process and transform nutrients during downstream transport. We will also cover ongoing work on Caribbean coral reefs\, where a pathogenic ciliate has contributed to widespread mass mortality of sea urchins. By combining environmental sequencing with cultured isolates\, we are exploring how microbial dynamics intersect with disease emergence in a rapidly changing ocean. Together\, these studies show how microbial communities\, from a continental-scale river network to tropical reef ecosystems\, serve as a powerful lens for understanding environmental change. \nMichael Henson is an Assistant Professor of Biological Sciences at Northern Illinois University and leads the Aquatic Microbiology Lab. His research focuses on how microbial communities respond to environmental change and how those responses scale to influence ecosystem processes. He takes an integrative approach that spans cultivation\, physiology\, and genomics\, linking organismal traits to patterns observed at ecosystem scales.\n\nHe earned his PhD at Louisiana State University\, where he developed a foundation in microbial ecology and began combining molecular tools with environmental data to study community structure and function. He then completed postdoctoral training at the University of Southern California and the University of Chicago\, where he further integrated cultivation-based approaches with genomic and ecological analyses to better connect microbial physiology to ecosystem dynamics.\n\nHis current research spans both freshwater and marine systems. In the Mississippi River\, he investigates how microbial communities maintain strong spatial structure despite temporal variability\, and how changes in water quality alter key taxa and ecosystem function. In marine systems\, his work focuses on host–microbe interactions and disease\, particularly through research on the ciliate pathogen affecting sea urchins\, where our lab is working to link ecological changes with disease outbreak patterns.\n\nOutside the lab\, he enjoys gardening with his husband\, traveling\, and spending time outdoors backpacking and camping. At home\, they share their lives and home with their two dogs\, Tyler and Emmy.\nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-michael-henson/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2026/01/Colloquium-Spring-Post-Header.jpeg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260420T150000 DTEND;TZID=America/Chicago:20260420T155000 DTSTAMP:20260513T193001 CREATED:20260414T194758Z LAST-MODIFIED:20260414T194758Z UID:10000176-1776697200-1776700200@uwm.edu SUMMARY:Freshwater Colloquium – Stock assessment and management of lake whitefish in Wisconsin waters of Green Bay and Lake Michigan DESCRIPTION:Join the School of Freshwater Sciences for a Colloquium with guest speaker: Dr. Iyob Tsehaye \nLake whitefish stocks in Wisconsin’s Lake Michigan waters have historically been managed as a single stock originating from North–Moonlight Bays. However\, over the last couple of decades\, this stock has declined in line with broader Lake Michigan trends linked to dreissenid mussel-induced food web shifts. Conversely\, the southern Green Bay population has seen a substantial resurgence after a century-long collapse. Telemetry and tagging data reveal minimal mixing between these groups: Green Bay-spawned fish rarely migrate to the lake side of the Door Peninsula\, and North–Moonlight Bays fish largely remain in northern Lake Michigan. This divergence in productivity and distribution\, further evidenced by the emergence of a major recreational fishery in Green Bay\, necessitates a shift in management. Separate stock assessments confirm that whitefish abundance is now significantly higher within Green Bay than on the lake side of the peninsula. Even so\, assessment models show the number of whitefish in Green Bay has declined by about half since their peak around 2012. While the decline of lake whitefish is likely driven largely by food-web disruptions caused by invasive mussels\, fishing pressure also plays a role. These findings suggest that spatial harvest allocations must be readjusted to reflect the contemporary regional productivity of these distinct stocks. \nIyob Tsehaye is a Great Lakes Quantitative Fisheries Research Scientist with the Wisconsin Department of Natural Resources (DNR). His research focuses on the assessment and management of recreationally and commercially important fisheries\, such as lake whitefish\, yellow perch and walleye\, as well as investigating predator-prey interactions to inform stocking decisions for salmonine predators. Before joining the DNR in 2015\, Iyob was a postdoctoral researcher at the Quantitative Fisheries Center at Michigan State University. He earned his PhD and MSc degrees from Wageningen University in the Netherlands and his Bachelor’s degree from the University of Asmara in Eritrea. \nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-stock-assessment-and-management-of-lake-whitefish-in-wisconsin-waters-of-green-bay-and-lake-michigan/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2026/01/Colloquium-Spring-Post-Header.jpeg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260413T150000 DTEND;TZID=America/Chicago:20260413T155000 DTSTAMP:20260513T193001 CREATED:20260331T183035Z LAST-MODIFIED:20260331T183657Z UID:10000175-1776092400-1776095400@uwm.edu SUMMARY:Freshwater Colloquium – From Weather to Paleo: Capturing the Continuum of Climate Variability DESCRIPTION:Join the School of Freshwater Sciences for a Colloquium with guest speaker: Dr. Raphaël Hébert \nWeather and climate variability span a continuum of timescales\, from day-to-day fluctuations to millennial-scale changes\, yet these regimes are often studied separately. My work explores how to bring these scales together within a unified framework that captures spatial structure\, temporal persistence\, and dynamical linkages across scales by combining diverse environmental datasets. I will first introduce my ongoing work with Prof. Sergey Kravtsov on data-driven forecasting from daily to seasonal timescales using high-resolution reanalysis products that integrate instrumental and satellite observations since 1980. I will then turn to earlier work using longer instrumental records\, climate model simulations\, and paleoclimate reconstructions to examine how the spatial and temporal covariance structure of climate variability evolves from decadal to centennial and millennial timescales\, highlighting both what we know—and what remains uncertain—about long-timescale climate variability. Together\, these perspectives suggest that similar statistical structures may underlie climate variability across a wide range of timescales and point toward new ways of connecting modern observations with paleoclimate evidence. \nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-from-weather-to-paleo-capturing-the-continuum-of-climate-variability/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2026/01/Colloquium-Spring-Post-Header.jpeg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260406T150000 DTEND;TZID=America/Chicago:20260406T155000 DTSTAMP:20260513T193001 CREATED:20260331T182704Z LAST-MODIFIED:20260331T182726Z UID:10000174-1775487600-1775490600@uwm.edu SUMMARY:Freshwater Colloquium – Restoration and Conservation of an Ancient Species\, the American Paddlefish DESCRIPTION:Join the School of Freshwater Sciences for a Colloquium with guest speaker: Dr. Jim Long \nAcipenseriformes\, including American Paddlefish (Polyodontidae\, Polyodon spathula) represents an ancient lineage of fish\, with representatives found back approximately 200 MYA. American Paddlefish is the only remaining extant species of its family\, since the recent extinction of the Chinese Paddlefish (Psephurus gladius). American Paddlefish occur in North America and are large-bodied (> 2 m total length [TL])\, potamadromous\, and have fertilized eggs that stick to hard substrates with pelagic larvae that develop while drifting and moving downstream. Overharvest and habitat fragmentation has reduced Paddlefish populations across its range\, including Oklahoma. In Oklahoma\, restoration efforts have returned the species to former parts of its range\, but factors associated with restoration success have just begun to be assessed. Since 2019\, I have been working with state and federal conservation partners to examine factors associated with Paddlefish restoration success including the development of novel monitoring techniques that include the use of side-scan sonar. Suitable substrate availability does not appear to limit Paddlefish reproduction\, but excessively turbid waters in spawning and rearing environments may. Side-scan sonar is an accurate tool for assessing abundance and can be used to monitor spring spawning movements. Further\, side-scan sonar appears to be a useful monitoring method to identify early age classes of fish. \nJim Long grew up in the Ozarks of southwest Missouri and received a PhD from Oklahoma State University in 2000. Afterward\, he went to South Carolina as a Fisheries Research Biologist investigating fish community structure in tidal freshwater wetlands. From 2002 to 2009\, Jim worked with the National Park Service as the Fishery Biologist for the southeast region. In 2009\, Jim moved back to Oklahoma as an Assistant Unit Leader and become Unit Leader in 2016. Jim’s research focuses on management-driven questions related to the process of fisheries management\, social dimensions\, early-life history of fishes\, and effects of invasive species on aquatic communities. \nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-restoration-and-conservation-of-an-ancient-species-the-american-paddlefish/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2026/01/Colloquium-Spring-Post-Header.jpeg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260330T150000 DTEND;TZID=America/Chicago:20260330T155000 DTSTAMP:20260513T193001 CREATED:20260310T164655Z LAST-MODIFIED:20260316T152347Z UID:10000171-1774882800-1774885800@uwm.edu SUMMARY:Freshwater Colloquium – Currents of Life: How Flow Shapes Complex Microbial Communities DESCRIPTION:Join the School of Freshwater Sciences for a Colloquium with guest speaker: Dr. Emmi Mueller \nMuch of life on Earth is at the mercy of currents and flow\, which determine the organisms and resources present in an environment. In aquatic ecosystems\, these currents shape the ecological and evolutionary trajectories of the diverse microbial communities that inhabit them. In this presentation\, I will discuss how microbial communities in both natural and man-made water systems are shaped by physical flow\, specifically variation in residence time\, or the time organisms and resources spend in a system. I will also discuss how these systems are shaped by the flow of energy\, such as through variation in metabolic activity and functions like antibiotic resistance\, focusing on how this knowledge may shape management of these systems from an ecosystem and human health perspective. \nDr. Emmi Mueller is a Postdoctoral Research Associate in the Newton Lab in the School of Freshwater Sciences. She earned her Ph.D. in Evolution\, Ecology\, and Behavior from Indiana University\, where her doctoral research focused on the importance of residence time and metabolic heterogeneity in structuring lake microbial communities. Her current role in the Newton Lab focuses primarily on understanding changes in antimicrobial resistance gene variants over time in wastewater and natural water systems. \nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-currents-of-life/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2026/01/Colloquium-Spring-Post-Header.jpeg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260309T150000 DTEND;TZID=America/Chicago:20260309T155000 DTSTAMP:20260513T193001 CREATED:20260303T173248Z LAST-MODIFIED:20260303T173248Z UID:10000170-1773068400-1773071400@uwm.edu SUMMARY:Freshwater Colloquium – Social-ecological science to inform climate adaptation in recreational fisheries DESCRIPTION:Join the School of Freshwater Sciences for a Colloquium with guest speaker: Dr. Zach Feiner \nClimate change is rapidly changing important recreational fisheries in the Upper Midwest. Combining insights about the ecological impacts of climate change on fish populations with a new understanding of how anglers will respond to those changes could offer new avenues for adaptation. This talk will present case studies for each facet of climate adaptation\, including climate effects on fish spawning phenology\, the importance of changing angler behavior for fishery outcomes\, and new frameworks for management and policy. \nZach Feiner is a research scientist with the Wisconsin Department of Natural Resources and UW-Madison Center for Limnology. He earned his BS in Zoology from UW-Madison\, MS in Zoology at North Carolina State University\, and completed his PhD and postdoc in Fisheries and Aquatic Sciences at Purdue University before returning to Wisconsin in 2018. His research focuses on inland freshwater ecosystems\, including the impacts of anthropogenic effects like climate change\, harvest\, and angler behavior on the function of aquatic ecosystems. \nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-zach-feiner/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2026/01/Colloquium-Spring-Post-Header.jpeg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260306T103000 DTEND;TZID=America/Chicago:20260306T140000 DTSTAMP:20260513T193001 CREATED:20260126T223455Z LAST-MODIFIED:20260310T203619Z UID:10000168-1772793000-1772805600@uwm.edu SUMMARY:UWM School of Freshwater Sciences Networking & Career Fair DESCRIPTION:Join us for the Spring 2026 Freshwater Sciences Networking & Career Fair!\nThe event will be held on Friday\, March 6 from 10:30am-2pm at the School of Freshwater Sciences\, Great Lakes Research Facility in Milwaukee\, WI. \nWhy attend?\n\nExplore the vast landscape of water-related career paths.\nNetwork with professionals and build relationships that could open doors for future opportunities.\nLearn about internships\, part-time\, and full-time job opportunities.\n\nAgenda\n\n10:30am-11am: Student Meet-and-Greet\n11am-12pm: Water Professional Panel Discussion\n12pm-2pm: Water Professional Networking Event\n\nIf you have any questions please contact Aaron Thiel\, thiela@uwm.edu. \nRegister to attend on Handshake. \nFull details are on our website. URL:https://uwm.edu/freshwater/event/school-of-freshwater-sciences-career-networking-fair-2/ LOCATION:Great Lakes Research Facility\, 600 E Greenfield Ave\, Milwaukee\, 53204\, United States CATEGORIES:Alumni & Community,Career and Leadership Development,Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2026/01/career-fair-event-header.jpg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260223T150000 DTEND;TZID=America/Chicago:20260223T155000 DTSTAMP:20260513T193001 CREATED:20260220T201521Z LAST-MODIFIED:20260220T202217Z UID:10000169-1771858800-1771861800@uwm.edu SUMMARY:Freshwater Colloquium – Agricultural Contamination in Groundwater: The Case of Nebraska DESCRIPTION:Join the School of Freshwater Sciences for a Colloquium with guest speaker: Harshanee Jayasekera\, PhD \nAgricultural production plays a central role in Nebraska’s economy but also poses persistent risks to groundwater quality\, particularly through nitrate contamination. Because a large majority of Nebraskans rely on groundwater for drinking\, understanding the effectiveness of groundwater protection policies is critical for environmental sustainability and public health in the state. I (and co-authors) examine agricultural contamination in Nebraska with a focus on evaluating the impact of policy measures such as Wellhead Protection Areas (WPAs) and the Conservation Reserve Program (CRP) on groundwater quality. Using comprehensive data from the Nebraska Groundwater Quality Clearinghouse (1996–2019)\, comprising over two million nitrate observations from approximately 33\,000 wells\, we provide evidence of statistically and economically meaningful reductions in groundwater nitrate concentrations associated with these policy interventions. Our main finding is that improvements in water quality materialize gradually\, often unfolding over decades rather than years. These results underscore the importance of long-term monitoring systems and sustained policy commitment when addressing nonpoint-source agricultural pollution. \nHarshanee Jayasekera is an interdisciplinary social scientist whose work focuses on groundwater quality management and long-term sustainability. Her research examines the intersection of groundwater quality and agriculture\, with particular attention to how policy and management decisions shape long-term resource outcomes. Through her research and outreach\, she supports evidence-based groundwater management strategies that balance agricultural productivity with environmental quality. She works extensively on groundwater sustainability issues in Nebraska\, providing insights to inform decision-making at local and state levels. Her current projects examine the long-term policy implications of agricultural land retirement on nutrient pollution in Nebraska\, the effectiveness of wellhead protection areas in improving groundwater quality\, and the human health impacts of environmental exposures in agricultural regions. \nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-agricultural-contamination-in-groundwater-the-case-of-nebraska/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2026/01/Colloquium-Spring-Post-Header.jpeg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251201T150000 DTEND;TZID=America/Chicago:20251201T155000 DTSTAMP:20260513T193001 CREATED:20251024T205204Z LAST-MODIFIED:20251118T203529Z UID:10000166-1764601200-1764604200@uwm.edu SUMMARY:Freshwater Colloquium – Fate of Plastics in the Environment: From Legacy Pollutants to Emergent Materials DESCRIPTION:Plastics are a pervasive part of everyday life and a central challenge in the environment. Environmental stresses such as sunlight\, temperature fluctuations\, wet/dry cycling or microbial forces affect the longevity or degradation of plastics. Assessing the fate of plastics under these stresses allows us to accurately predict the service lifetime of plastics used in infrastructure (or evaluate the extent of the plastic pollution problem. This talk will center around some of the fundamental chemistry questions the Maurer-Jones group asks around how plastics degrade and what are the implications for them in the environment. Insights my group has made we will be a jumping off point to explore some questions or concepts around the future of plastic materials. \nMelissa Maurer-Jones did her BS in chemistry at University of St.Thomas in St. Paul MN and completed a Chemistry Ph.D. at University of Minnesota – Twin Cities working for Dr. Christy Haynes where she studied the toxicity response of mammalian and bacterial models to engineered nanoparticles. She went on to do a postdoc with Dr. Kris McNeill at ETH Zurich studying the environmental photochemistry of a plastic material. Melissa has been at UMD since 2016 where she is currently an Associate Professor in the department of Chemistry and Biochemistry and Director of Graduate Studies for the Chemistry MS program. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-fate-of-plastics-in-the-environment-from-legacy-pollutants-to-emergent-materials/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events ATTACH;FMTTYPE=image/png:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2025/08/Fall-2025-Colloquium.png X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251117T150000 DTEND;TZID=America/Chicago:20251117T155000 DTSTAMP:20260513T193001 CREATED:20251106T201005Z LAST-MODIFIED:20251106T201005Z UID:10000167-1763391600-1763394600@uwm.edu SUMMARY:Freshwater Colloquium – Tracking and Modeling Pathogens in Water Systems: From Watersheds to Wastewater Treatment DESCRIPTION:Tracking and predictive modeling of pathogens in aquatic systems can be used to assess recreational water quality\, inform public health decisions through wastewater surveillance\, and identify problematic conditions in wastewater treatment plants that may lead to effluent discharge challenges. This presentation first highlights predictive models built using measurements of Staphylococcus aureus and fecal indicator bacteria across fresh\, brackish\, and marine waters to better understand environmental drivers and mitigate risks to recreators. Next\, modeling is used to evaluate the efficacy of wastewater-based epidemiology by comparing concentrations of SARS-CoV-2 in wastewater to reported case counts using a novel testing instrument. Finally\, this work explores how microbial indicators identified from conveyance systems and within wastewater treatment processes can help detect septic or stressed conditions that may contribute to effluent quality issues. Together\, this research demonstrates how integrating pathogen monitoring\, microbial community profiling\, and modeling across watersheds and wastewater systems can inform water quality management\, enhance treatment diagnostics\, and strengthen public health forecasting. \nDr. Maria Steadmon is a postdoctoral researcher in the McLellan Lab at the School of Freshwater Sciences. She earned her Ph.D. in oceanography from the University of Hawaiʻi at Mānoa and her doctoral research centered on the detection and quantification of microbial pathogens across aquatic environments. She also worked with the Hawaiʻi Department of Health on their wastewater surveillance program. Her current role in the McLellan lab mainly focuses on investigating microbial communities in sewage conveyance systems and wastewater treatment plants. \nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-tracking-and-modeling-pathogens-in-water-systems-from-watersheds-to-wastewater-treatment/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251110T150000 DTEND;TZID=America/Chicago:20251110T155000 DTSTAMP:20260513T193001 CREATED:20251024T203710Z LAST-MODIFIED:20251024T204644Z UID:10000165-1762786800-1762789800@uwm.edu SUMMARY:Freshwater Colloquium – Sources\, Fate\, and Effects of PFAS Mixtures in Great Lakes Ecosystems and Native Fishes DESCRIPTION:Environmental contamination of PFAS is one of the greatest challenges facing freshwater ecosystems today due to widespread accumulation and a high degree of uncertainty regarding ecological risk and health hazards. PFAS are a large class of man-made chemicals used in a wide range of applications such as metal plating\, food packaging\, non-stick coating\, waterproof and stain-resistant fabrics\, and firefighting foams. Because of their numerous sources and applications\, these chemicals are present in the environment as complex mixtures of many different types of PFAS compounds. Once in the environment\, PFAS do not break down completely due to their highly stable fluorinated carbon bonds\, allowing them to persist and accumulate in water supplies\, biota\, and humans. Our laboratory in the Center for PFAS Research and the Department of Fisheries and Wildlife at Michigan State University investigates the accumulation of PFAS mixtures in the Great Lakes region and the impacts of PFAS exposure on native freshwater fishes. This presentation will discuss our field and laboratory research characterizing the distribution of PFAS in environmental matrices\, the bioaccumulation of PFAS in biota\, and the effects of PFAS on the growth\, reproduction\, and physiological condition of native fishes. Together\, this research can inform evidence-based decision-making surrounding ecosystem health\, remediation\, fish consumption advisories\, and water quality standards in the Great Lakes region. \nDr. Rachel Leads is an Aquatic Ecotoxicologist and Postdoctoral Research Associate in the Department of Fisheries and Wildlife and Center for PFAS Research at Michigan State University. She received her M.S. in Marine Biology from the College of Charleston and her Ph.D. in Biology from the University of North Texas. Her research characterizes the physiological mechanisms and ecological effects of contaminants and environmental stressors in marine and freshwater organisms. Currently\, Dr. Leads studies the impacts of per- and polyfluoroalkyl substances (PFAS) on native fish in the Great Lakes region. Overall\, her work uses both field and laboratory assessments to understand the mechanisms and impacts of contaminant exposure on aquatic organisms across multiple levels of biological organization\, from molecular to whole-organism responses. \nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-sources-fate-and-effects-of-pfas-mixtures-in-great-lakes-ecosystems-and-native-fishes/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251027T150000 DTEND;TZID=America/Chicago:20251027T155000 DTSTAMP:20260513T193001 CREATED:20251014T174009Z LAST-MODIFIED:20251014T174449Z UID:10000164-1761577200-1761580200@uwm.edu SUMMARY:Freshwater Colloquium – Changing Global Water Tables Over The Past 21\,000 Years DESCRIPTION:Although groundwater and lakes are vital freshwater reservoirs\, little is known about how their storage volumes or regional distributions change in the long term. In this talk\, I will share results from a global-scale transient simulation of the global water table over the past 21\,000 years\, including both groundwater and lake surfaces. The simulation is obtained using the Water Table Model (WTM)\, forced by climate simulation data and topography that changes through time as a result of glacial isostatic adjustment (GIA). Our results highlight the strong correlation between precipitation and water table depth\, and the impact of melting ice sheets on lake storage. We will discuss the impacts of changing groundwater storage on global sea level\, and will also examine the impacts of lakes and groundwater on GIA. \nKerry Callaghan is an Assistant Professor at the University of Illinois Chicago. She obtained her PhD from the University of Minnesota\, where she developed the Water Table Model (WTM)\, and then completed a postdoc at the Lamont-Doherty Earth Observatory\, Columbia University\, before starting her current position. Prof. Callaghan’s research focuses on the interactions between water and our changing landscape and Earth system. \nThis presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-changing-global-water-tables/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251020T150000 DTEND;TZID=America/Chicago:20251020T155000 DTSTAMP:20260513T193001 CREATED:20251014T161634Z LAST-MODIFIED:20251014T161634Z UID:10000163-1760972400-1760975400@uwm.edu SUMMARY:Freshwater Colloquium – Troubled Waters: Impacts of Emerging Contaminants on Early Life Stages of Fish DESCRIPTION:Historically\, ecotoxicological toxicity studies were conducted with limited connections to human health. The field of environmental toxicology has recently embraced a “one health” approach\, with increased focus on understanding the underlying mechanistic effects to improve species extrapolation. While many are shifting towards in silico and Adverse Outcome Pathway approaches\, in vivo toxicity testing using zebrafish and fathead minnow larvae allows for integrated systematic toxicity screening using physiologically complex endpoints and incorporation of latent and transgenerational effects following early exposure to environmental contaminants. Dr. King-Heiden will share the approach she has used to integrate experimental endpoints useful for predicting latent and long-term risks for adverse health effects in both wildlife and humans\, focusing on her most recent studies using neonicotinoid pesticides and PFAS. \nDr. King-Heiden is a Professor of Biology and River Studies Center at UW-La Crosse\, who specializes in the field of aquatic toxicology\, developmental biology\, and reproductive physiology. She earned her PhD from UW-Milwaukee Department of Biology\, working with Dr. Carvan at the now School of Freshwater Sciences\, studying the reproductive toxicity of Dioxin. She continued this work as a postdoc at the Molecular and Environmental Toxicity Center at UW Madison\, exploring the latent and transgenerational reproductive toxicity of dioxin\, and developmental toxicity of nanomaterials. She has been in the Biology department at UW-La Crosse since 2008. At this comprehensive university\, she is focused on teaching. Her research revolves around undergraduate and MS students\, with a continued focus discerning the impacts of embryonic exposure to emerging contaminants of concern\, using primarily zebrafish and fathead minnows as a model. Her work reveals how exposure to these contaminants influence physiological and behavioral endpoints of ecological importance\, with implications for ecological resilience as well as human health. This presentation is open to students\, faculty\, staff\, alumni and the public. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-troubled-waters-impacts-of-emerging-contaminants-on-early-life-stages-of-fish/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251017T150000 DTEND;TZID=America/Chicago:20251017T180000 DTSTAMP:20260513T193001 CREATED:20250828T172812Z LAST-MODIFIED:20250917T193623Z UID:10000158-1760713200-1760724000@uwm.edu SUMMARY:Freshwater Sciences Undergraduate Preview Day DESCRIPTION:Are you passionate about saving the planet’s most precious resource? Thinking of a career in marine biology\, aquatic science\, ecosystem research\, or environmental science? \nJoin the UWM School of Freshwater Sciences for Undergrad Preview Day! \n\nGet a hands-on look at how our students explore\, protect\, and innovate around water—right on the shores of Lake Michigan. \nTour our labs\, meet faculty\, and discover how you can turn your passion into purpose.\n\nREGISTER NOW! URL:https://uwm.edu/freshwater/event/freshwater-sciences-undergraduate-preview-day/ LOCATION:School of Freshwater Sciences\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Prospective Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251006T150000 DTEND;TZID=America/Chicago:20251006T155000 DTSTAMP:20260513T193001 CREATED:20250929T162255Z LAST-MODIFIED:20250929T162457Z UID:10000162-1759762800-1759765800@uwm.edu SUMMARY:Freshwater Colloquium – Pollution History of Black Carbon (Soot)\, Toxic Metals and PFAS in Green Bay Over the Past Century DESCRIPTION:Green Bay\, the world’s largest freshwater estuary\, and Milwaukee Harbor have experienced significant ecological and environmental changes\, driven by increased anthropogenic activities and the introduction of invasive species. Designated by EPA as Areas of Concern (AOCs) in the 1980s\, both systems provide natural laboratories for assessing long-term pollution trends. This presentation will explore case studies on the depositional history of black carbon (soot)\, toxic metals (Cu\, Pb\, Zn\, Cd\, Hg\, Co\, Ni\, Cr\, and As)\, and polyfluoroalkyl substances (PFAS) in Green Bay sediments over the past 50-100 years\, with comparative insights from Milwaukee Harbor. \nDr. Guo’s major research focus is on aquatic biogeochemistry\, with an emphasis on the role of natural organic matter in governing the reactivity\, fate and transport of chemical species\, including trace metals\, radionuclides\, nanoparticles\, microplastics\, PFAS\, and other contaminants. He received his Ph.D. degree in Chemical Oceanography from Texas A&M University\, College Station. After working as a postdoc and assistant research scientist at Texas A&M-Galveston\, Dr. Guo joined University of Alaska Fairbanks in 2000 as a research professor in the International Arctic Research Center and then University of Southern Mississippi in 2005 as a faculty member in the Department of Marine Science. Dr. Guo has been a professor in the School of Freshwater Sciences at the University of Wisconsin-Milwaukee since 2012. Dr. Guo has authored/coauthored over 240 peer-reviewed publications\, with an H-index of 70 and over 17\,000 citations based on Google Scholar. His research influence is specifically recognized by ScholarGPS®\, which ranked him #4 globally in Dissolved Organic Carbon and #5 in Organic Matter based on publications from the prior five years (2022). He received the 2023 UWM Senior Faculty Research Award. \nSam earned her B.S. in Geography with a minor in Chemistry from UW-Whitewater in 2024. She just started the second year of her master’s here at SFS working in Dr. Guo’s lab. Her research consists of studying the historical distribution of heavy metals in Milwaukee Harbor and Green Bay sediments\, analyzing the degradation of microplastics and microplastic-derived DOM\, as well as examining PFAS molecular weight distribution via ultrafiltration. This year\, she has had the opportunity to present her research at numerous conferences\, including the Society for Freshwater Sciences annual meeting in San Juan\, PR\, the ACS Great Lakes regional meeting in Appleton\, WI\, and at the International Association for Great Lakes Research in Milwaukee\, WI. \n  URL:https://uwm.edu/freshwater/event/freshwater-colloquium-pollution-history-of-black-carbon-soot-toxic-metals-and-pfas-in-green-bay-over-the-past-century/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250929T150000 DTEND;TZID=America/Chicago:20250929T155000 DTSTAMP:20260513T193001 CREATED:20250924T172217Z LAST-MODIFIED:20250924T172301Z UID:10000161-1759158000-1759161000@uwm.edu SUMMARY:Freshwater Colloquium – First Flush: Rapid Interdisciplinary Response to a 5 Billion Gallon Combined Sewer Overflow DESCRIPTION:Devastating rain washed chemicals\, biomass\, and combined sewerage into the Milwaukee Harbor from SE Wisconsin. Twice as strong as a 2008 event\, it briefly changed the aquascape of Milwaukee. Our lab time series put the first month of impact into focus using 5 survey cruises including teams from  student classes. Cycles of layering – mixing and wind patterns showed vigorous plankton growth and its chemical draw-down responding on 2-3-day scales to weather patterns. Nutrient evasion into nearshore waters did not persist\, but phytoplankton communities were diversified compared to earlier in the year. Fine coincidence with salmon and perch fishing action. \nOur very own Senior Scientist\, Dr. Russell Cuhel\, will present his talk “First Flush: Rapid Interdisciplinary Response to a 5 Billion Gallon Combined Sewer Overflow”. Sure to be a fascinating discussion on very current topic for all of us. Please join us Monday September 29th @ 3PM in the Ballroom. Arrive before 3PM to enjoy some light refreshments. \n  URL:https://uwm.edu/freshwater/event/freshwater-colloquium-first-flush-rapid-interdisciplinary-response-to-a-5-billion-gallon-combined-sewer-overflow/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250917T173000 DTEND;TZID=America/Chicago:20250917T190000 DTSTAMP:20260513T193001 CREATED:20250903T213934Z LAST-MODIFIED:20250912T171703Z UID:10000159-1758130200-1758135600@uwm.edu SUMMARY:The Search for Shackleton's Lost Ice Ship Endurance DESCRIPTION:The Search for Shackleton’s Lost Ice Ship Endurance with speaker Tim Jacob\, Director of Traveler Programs at Reach the World. \nHosted by Our Lake\, Our Science at UWM School of Freshwater Sciences. \nWednesday\, September 17\, 2025\, Great Lakes Research Facility room 3080\, 5:30pm Reception\, 6:00pm Talk. \nThis in-person event is free and open to the public. \n  URL:https://uwm.edu/freshwater/event/the-search-for-shackletons-lost-ice-ship-endurance/ LOCATION:Great Lakes Research Facility\, Rm 3080\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Atmospheric Science,Lectures Conferences and Symposiums,Public,Student Life,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250915T150000 DTEND;TZID=America/Chicago:20250915T155000 DTSTAMP:20260513T193001 CREATED:20250909T183522Z LAST-MODIFIED:20250909T183523Z UID:10000160-1757948400-1757951400@uwm.edu SUMMARY:Freshwater Colloquium – Runoff on the Runway: How Airports Shape Our Streams DESCRIPTION:Owen Stefaniak will present “Runoff on the Runway: How Airports Shape Our Streams” as part of the School of Freshwater Sciences Fall Colloquium\nOwen Stefaniak (left) and Kathryn Johncock collecting water samples during winter.\n \nOwen Stefaniak is a Physical Scientist with the USGS Upper Midwest Water Science Center’s Milwaukee Office\, where he specializes in anthropogenic contaminants in surface waters. He is a graduate of the UWM School of Freshwater Sciences. \n\nThis talk will explore 20 years of USGS research on the environmental impacts of airports on stream health. \n  \n  \n \n\nThis seminar of the Fall 2025 Freshwater Colloquium series will be held in the GLRF Ballroom. A fascinating talk around freshwater resources. Please join us! \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n  \n\nFall 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-runoff-on-the-runway/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250715T080000 DTEND;TZID=America/Chicago:20250715T120000 DTSTAMP:20260513T193001 CREATED:20250514T151901Z LAST-MODIFIED:20250514T151901Z UID:10000157-1752566400-1752580800@uwm.edu SUMMARY:Charting New Waters: Prospective Student Voyages DESCRIPTION:Thinking of a career in freshwater or marine science? Join us aboard the R/V Neeskay for an information session\, tour\, and science field trip – all rolled into one unforgettable experience! \n\nTry hands-on field science tools and techniques – deploy the backbone instruments for Great Lakes and ocean research\nHear from UWM faculty scientists and staff\nCruise the Milwaukee Harbor on a research vessel\nDiscover career paths in water science\nGet tips on applying to undergraduate and graduate programs\n\nTrip dates: \n\nSaturday\, May 31\nTuesday\, June 24\nTuesday\, July 15\n\nOPEN TO PROSPECTIVE STUDENTS ONLY! \nLearn more and register on the official event page. URL:https://uwm.edu/freshwater/event/charting-new-waters-prospective-student-voyages/2025-07-15/ LOCATION:School of Freshwater Sciences\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Prospective Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2024/09/charting-new-waters.jpg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250624T080000 DTEND;TZID=America/Chicago:20250624T120000 DTSTAMP:20260513T193001 CREATED:20250514T151901Z LAST-MODIFIED:20250514T151901Z UID:10000156-1750752000-1750766400@uwm.edu SUMMARY:Charting New Waters: Prospective Student Voyages DESCRIPTION:Thinking of a career in freshwater or marine science? Join us aboard the R/V Neeskay for an information session\, tour\, and science field trip – all rolled into one unforgettable experience! \n\nTry hands-on field science tools and techniques – deploy the backbone instruments for Great Lakes and ocean research\nHear from UWM faculty scientists and staff\nCruise the Milwaukee Harbor on a research vessel\nDiscover career paths in water science\nGet tips on applying to undergraduate and graduate programs\n\nTrip dates: \n\nSaturday\, May 31\nTuesday\, June 24\nTuesday\, July 15\n\nOPEN TO PROSPECTIVE STUDENTS ONLY! \nLearn more and register on the official event page. URL:https://uwm.edu/freshwater/event/charting-new-waters-prospective-student-voyages/2025-06-24/ LOCATION:School of Freshwater Sciences\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Prospective Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2024/09/charting-new-waters.jpg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250603T200000 DTEND;TZID=America/Chicago:20250603T220000 DTSTAMP:20260513T193001 CREATED:20250513T213236Z LAST-MODIFIED:20250530T143229Z UID:10000154-1748980800-1748988000@uwm.edu SUMMARY:"All Too Clear" FREE Screening at IAGLR 2025 DESCRIPTION:See what lies beneath the water surface! In this 90-minute film\, you’ll experience the Great Lakes like you’ve never seen them before. This special screening is FREE and open to the public in addition to IAGLR attendees! A panel discussion will follow the screening. \n“All Too Clear” uses cutting-edge underwater drones to explore how quadrillions of tiny invasive mussels\, known as quaggas\, are re-engineering the ecosystem of the Great Lakes at a scale not seen since the glaciers. To capture this epic change\, the husband-and-wife filmmaking team of Zach Melnick and Yvonne Drebert spent more than 150 days filming underwater\, making it the most ambitious underwater film ever made about the Great Lakes. Part scientific exploration\, part natural history adventure – the film showcases freshwater wildlife and environments like neverbefore. \nLearn more about the film. \nThis screening is free\, but we’d appreciate all interested to register ahead of time so we have an idea of headcount. Register now. URL:https://uwm.edu/freshwater/event/all-too-clear-free-screening-at-iaglr-2025/ LOCATION:Baird Center Ballroom\, 400 W Wisconsin Ave.\, Milwaukee\, WI\, 53203\, United States CATEGORIES:Public,Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2024/09/all-too-clear-still.jpg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250531T080000 DTEND;TZID=America/Chicago:20250531T120000 DTSTAMP:20260513T193001 CREATED:20250514T151901Z LAST-MODIFIED:20250514T151901Z UID:10000155-1748678400-1748692800@uwm.edu SUMMARY:Charting New Waters: Prospective Student Voyages DESCRIPTION:Thinking of a career in freshwater or marine science? Join us aboard the R/V Neeskay for an information session\, tour\, and science field trip – all rolled into one unforgettable experience! \n\nTry hands-on field science tools and techniques – deploy the backbone instruments for Great Lakes and ocean research\nHear from UWM faculty scientists and staff\nCruise the Milwaukee Harbor on a research vessel\nDiscover career paths in water science\nGet tips on applying to undergraduate and graduate programs\n\nTrip dates: \n\nSaturday\, May 31\nTuesday\, June 24\nTuesday\, July 15\n\nOPEN TO PROSPECTIVE STUDENTS ONLY! \nLearn more and register on the official event page. URL:https://uwm.edu/freshwater/event/charting-new-waters-prospective-student-voyages/2025-05-31/ LOCATION:School of Freshwater Sciences\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Prospective Students,UWM Campus Events ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2024/09/charting-new-waters.jpg X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250428T150000 DTEND;TZID=America/Chicago:20250428T155000 DTSTAMP:20260513T193001 CREATED:20250417T220141Z LAST-MODIFIED:20250418T155845Z UID:10000151-1745852400-1745855400@uwm.edu SUMMARY:Freshwater Colloquium: Occurrence of Per- and Polyfluoroalkyl Substances (PFAS) in Surface Waters of the Chicago Area Waterway System DESCRIPTION:Gordon Getzinger will present “Occurrence of Per- and Polyfluoroalkyl Substances (PFAS) in Surface Waters of the Chicago Area Waterway System” as part of the School of Freshwater Sciences Spring Colloquium\nDr. Getzinger is an Assistant Professor at Loyola University Chicago in the School of Environmental Sustainability (SES). As an environmental chemist he studies the occurrence and fate of anthropogenic chemicals in natural and engineered systems. Before joining the SES faculty in 2023\, he was a research scientist at Biobot Analytics\, a consultant at Exponent\, and a research scientist with the North Carolina PFAS Testing Network. Additionally\, he has held adjunct/lecturer appointments in the Chemistry Department at Tufts University and the Department of Civil and Environmental Engineering at MIT. He completed his post-doctoral training with the Environmental Chemistry Group at ETH Zurich and his PhD with Professor Lee Ferguson at the Nicholas School of the Environment at Duke University. \nPer- and polyfluoroalkyl substances (PFAS) are a class of organic contaminants occurring ubiquitously in aquatic environments owing to their wide-spread consumer and industrial use and the recalcitrance of carbon-fluorine bonds toward environmental transformations. PFAS accumulate in sediments and biota and are known to cause ecological and human health effects. PFAS use in industry and consumer goods leads to their occurrence in treated wastewater and residual biosolids. Furthermore\, recent research indicates that stormwater may transport PFAS from urban landscapes into aquatic ecosystems. Considering potential future regulations on levels of PFAS in wastewater discharges\, knowledge of PFAS sources in urban aquatic environments is essential for determining efficacy of any proposed discharge limits or ambient water quality standards. The Chicago Area Waterway System (CAWS) presents a unique opportunity for studying the sources and fate of PFAS in urban aquatic systems because the CAWS surface waters are highly impacted by treated wastewater effluent\, combined sewer overflows\, and stormwater runoff. However\, there are currently few data available on levels of PFAS in CAWS surface waters. To better understand current levels of PFAS in the CAWS\, we conducted a monitoring campaign in major CAWS waterways with varying degrees of stormwater runoff and wastewater influence. Samples were analyzed using solid phase extraction and high-performance liquid chromatography tandem mass spectrometry for >30 PFAS of regulatory concern. This presentation will explore relationships between PFAS occurrence and probable PFAS sources and evaluate PFAS concentrations considering current ecological health guidelines. \n\n\nThis final seminar of the Spring 2025 Freshwater Colloquium series will be held in the GLRF Ballroom. Another fascinating talk around this semester’s overarching theme of Emerging Contaminants in Aquatic Environments. Please join us! \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n \n\nFall 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-occurrence-of-per-and-polyfluoroalkyl-substances-pfas-in-surface-waters-of-the-chicago-area-waterway-system/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250422T120000 DTEND;TZID=America/Chicago:20250422T130000 DTSTAMP:20260513T193001 CREATED:20250328T171030Z LAST-MODIFIED:20250328T171030Z UID:10000152-1745323200-1745326800@uwm.edu SUMMARY:Earth Day Water Policy Scholar Webinar DESCRIPTION:You are invited to “Possible Future Uses of New Lakefront at the Port of Milwaukee” on April 22\, 2025\, 12 p.m. to 1 p.m. CDT. \nThe Center for Water Policy is hosting an Earth Day webinar featuring James Wasley\, Professor at UW-Milwaukee and 2024-2025 Water Policy Scholar. He will present his research on the possible future uses of the Dredged Material Disposal Facility at the Port of Milwaukee. This facility is part of a broader network of dredge-spoil sites across the Great Lakes. He will also discuss these newly created lakefront lands in a basin-wide context and include examples of closure and conversion to future public uses in other parts of the Great Lakes. \nBuilding on prior workshops\, including the 2019 National Science Foundation Sustainable Urban Systems Workshop and the 2022 Great Lakes Higher Education Consortium Workshop\, Prof. Wasley’s research serves as a test case for collaboration among academic researchers\, design professionals\, and policymakers to develop innovative\, nature-based design solutions for Great Lakes cities. In August of 2024\, he convened a meeting of experts on issues associated with the dredged material disposal facilities and the future of this research aligns with the Freshwater Collaborative of Wisconsin’s Grand Water Challenge on Great Lakes Management and Restoration. \nProf. Wasley is Director of the Institute for Ecological Design and the former chair of the Department of Architecture. He is the past president of the Society of Building Science Educators and the Wisconsin Green Building Alliance: An Affiliate of the United States Green Building Council. He was a founding member of WGBA in 1997. \nThis event is co-hosted by the Freshwater Collaborative of Wisconsin and is part of a quarterly online water symposium series in partnership with the Great Lakes Higher Education Consortium and Council of the Great Lakes Region. \nRegister for the event here! URL:https://uwm.edu/freshwater/event/earth-day-water-policy-scholar-webinar/ LOCATION:Virtual CATEGORIES:Alumni & Community,Lectures Conferences and Symposiums,Public,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250414T150000 DTEND;TZID=America/Chicago:20250414T155000 DTSTAMP:20260513T193001 CREATED:20250407T162825Z LAST-MODIFIED:20250407T162825Z UID:10000150-1744642800-1744645800@uwm.edu SUMMARY:Freshwater Colloquium: Groundwater management in Northeast Wisconsin: Potential for geogenic metals mobilization DESCRIPTION:Erin Berns-Herrboldt will present “Groundwater management in Northeast Wisconsin: Potential for geogenic metals mobilization” as part of the School of Freshwater Sciences Spring colloquium.\nDr. Erin Berns-Herrboldt is an Assistant Professor of Water Science at the University of Wisconsin – Green Bay. She completed her PhD in Civil Engineering in the Environmental and Water Resources Engineering Program at the University of Texas at Austin and conducted postdoctoral research at Oak Ridge National Laboratory. Her research experience includes studying the fate of organic groundwater contaminants\, biogeochemical controls on carbon release from Arctic permafrost soils\, metals release from aquifer sediments\, and nutrient cycling in stream hyporheic zones. \n\nGroundwater quality can be impacted by metals released from aquifer minerals\, potentially causing human health concerns. When aquifer sediments are relatively undisturbed\, metals bound to minerals remain stable\, but during transitions in water level – due to variations in groundwater recharge or over-pumping – metals can be released to groundwater. This project evaluates the history of groundwater use in the Northeast Wisconsin Groundwater Management Area (GMA) for the confined Cambrian-Ordovician aquifer\, and explores the potential for metals release due to oxidation during aquifer drawdown. \n \nTo evaluate these changes\, (1) groundwater was sampled across the GMA for evaluation of water chemistry\, (2) a monitoring well was installed to improve groundwater level monitoring in the southern portion of the GMA\, and (3) batch leaching experiments were conducted under oxic and anoxic conditions with rock cuttings from the newly installed monitoring well to evaluate potential for metals release. Initial leaching experiment results show that nickel and cobalt increased over time in oxic experiments\, but not in anoxic experiments\, and negligible arsenic was observed over the experimental timeframe. This study provides initial results that support improved understanding of metals release from oxidized GMA aquifer sediments. Findings from this study will inform the development of effective groundwater management strategies\, ensuring the sustainability and safety of water resources in the Northeast Wisconsin GMA. \n\nThe Spring 2025 Freshwater Colloquium series takes place in the GLRF Ballroom. Most talks this semester will involve the theme of Emerging Contaminants in Aquatic Environments. Please join us! \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n\n\n\n\n \n\nSpring 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-groundwater-management-in-northeast-wisconsin-potential-for-geogenic-metals-mobilization/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250407T150000 DTEND;TZID=America/Chicago:20250407T155000 DTSTAMP:20260513T193001 CREATED:20250324T191116Z LAST-MODIFIED:20250324T191116Z UID:10000149-1744038000-1744041000@uwm.edu SUMMARY:Freshwater Colloquium: Novel mechanistic insights into nanoplastics release in natural environment DESCRIPTION:Boya Xiong will present “Novel mechanistic insights into nanoplastics release in natural environment” as part of the School of Freshwater Sciences spring colloquium.\nDr. Boya Xiong is an assistant professor in the Department of Civil\, Environmental\, and Geo-Engineering at the University of Minnesota\, Twin Cities. Dr. Xiong’s research focuses on the interface of polymer science and environmental engineering\, to i) elucidate the fundamental mechanisms of polymer degradation (e.g.\, micro/nanoplastic generation) that dictate the environmental fate and shape sustainable design and management of future polymer chemicals and materials; ii) develop novel nature-inspired membrane material architecture to enable efficient separation and mitigate pathogenic contamination and fouling in engineered systems. Xiong earned a Ph.D. in Environmental engineering at Pennsylvania State University where she also obtained her M.S. in Agricultural and Biological Engineering. Xiong earned a B.S. in Biotechnology from East China University of Science and Technology. Prior to her appointment\, Xiong was working as a postdoctoral associate at MIT. She was selected as ASCE MN chapter Young Engineer of the Year in 2023 and an American Academy of Environmental Engineers and Scientists 40 Under 40 awardee in 2024. \n  \n\nThe majority of prevalent micro- / nanoplastic (MP/NPs) pollutants are derived from the degradation of bulk plastics in the natural environment. Mechanical degradation (i.e.\, abrasion and fragmentation) is a primary mechanism of MP/NP release; however\, its fundamental understanding remains elusive. Furthermore\, data generated from disparate and qualitative mechanical degradation methods are hard to unify for estimating degradation in a diverse range of environmental conditions. In this talk\, I will highlight how fragmentation and surface abrasive wear play a different role in releasing MP/NPs during the lifetime of plastics. Focusing on abrasive wear\, I will introduce our novel and quantitative methods\, particularly our lateral force microscopy-based nanoscratch method\, to mechanistically probe MP/NP release at a single surface roughness protrusion (asperity) level. Next\, I will highlight the combined effects of photo-oxidization and nanoscale abrasive wear on releasing nanoplastic release. In particular\, I will elucidate the evolution of the wear mechanism and rates of semi-crystalline polyethylene during photooxidation. These results provide an underlying mechanism and key polymer properties responsible for why photooxidation leads to more nanoplastic release via abrasive wear. Our quantitative approach will significantly advance our understanding of MP/NP release in the natural environment. The data will contribute to future predictive modeling of nanoplastic release rate as a function of polymer properties and environmental conditions. Incorporating such models into an environmental risk assessment framework will guide the early-stage design\, selection\, and management of polymer materials for responsible environmental outcomes. \n\nThe Spring 2025 Freshwater Colloquium series will be held in the GLRF Ballroom. Most talks will involve the theme of Emerging Contaminants in Aquatic Environments. Snacks will be available prior to the talk. Please join us! \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n\n\n \n\nSpring 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-boya-xiong/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250324T150000 DTEND;TZID=America/Chicago:20250324T155000 DTSTAMP:20260513T193001 CREATED:20250311T193252Z LAST-MODIFIED:20250324T185956Z UID:10000148-1742828400-1742831400@uwm.edu SUMMARY:Freshwater Colloquium: Anthropogenic impacts in large-lake carbon cycling DESCRIPTION:Liz Minor will present “Anthropogenic impacts in large-lake carbon cycling” as part of the School of Freshwater Sciences Spring colloquium.\nLiz Minor is a professor in the Department of Chemistry and Biochemistry and at the Large Lakes Observatory at the University of Minnesota Duluth. She received her B.S. in Chemistry from The College of William and Mary in Virginia and her Ph.D. in Marine Chemistry and Geochemistry from the Massachusetts Institute of Technology/Woods Hole Oceanographic Institution Joint Program in Oceanography and Ocean Engineering. Her research group studies carbon cycling in lake\, river\, and ocean water columns across daily to decadal scales. This includes work on lake acidification and alkalinity trends and studies of organic matter in aquatic systems\, including that new anthropogenic organic matter\, plastics. Support for her work has come from the US National Science Foundation\, the Minnesota Pollution Control Agency\, the State of Minnesota Environmental and Natural Resources Trust Fund\, Minnesota Sea Grant\, the ACS Petroleum Research Fund\, and the US National Park System. \n \n\nHumans have impacted large-lake carbon cycles in several ways\, including shifting atmospheric exchanges of inorganic carbon\, the effects of erosion and chemical weathering\, inputs of nutrients\, and inputs of anthropogenic carbon species such as microplastics. This talk will discuss anthropogenic impacts on Lake Superior carbon cycling\, with a focus on microplastics and inorganic carbon inputs. \nThe Spring 2025 Freshwater Colloquium series will be held in the GLRF Ballroom. Most talks will involve the theme of Emerging Contaminants in Aquatic Environments. Snacks will be available prior to the talk. Please join us! \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n \n\nSpring 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-liz-minor/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250310T150000 DTEND;TZID=America/Chicago:20250310T155000 DTSTAMP:20260513T193001 CREATED:20250225T225131Z LAST-MODIFIED:20250304T143319Z UID:10000147-1741618800-1741621800@uwm.edu SUMMARY:Freshwater Colloquium: Ecogenomics of freshwater lake bacteria DESCRIPTION:Katherine (Trina) McMahon will present “Ecogenomics of freshwater lake bacteria” as part of the School of Freshwater Sciences Fall colloquium.\n \nProfessor Katherine McMahon received her BS in Civil Engineering and MS in Environmental Engineering from the University of Illinois at Urbana Champaign in 1995 and 1997 respectively. She earned her PhD in Environmental Engineering at the University of California at Berkeley in 2002. She joined the faculty in the Civil and Environmental Engineering Department at the University of Wisconsin Madison in 2003 and became cross-appointed with the Bacteriology Department in 2008. She was promoted to Associate Professor with tenure in 2008 and professor in 2013. Her research interests span multiple dimensions of the “water microbiome” including wastewater treatment and freshwater quality. She has a special interest in wastewater treatment bacteria that sequester phosphorus using an enigmatic physiology. She is heavily invested in the North Temperate Lakes Long Term Ecological Research site and directs the NTL Microbial Observatory. Finally\, she is passionate about future faculty professional development and has served as Co-Faculty Director of the Delta Program in Research\, Teaching\, and Learning at UW-Madison since 2011. She was elected as a fellow in the American Academy of Microbiology in 2018. \n\n \nFreshwater lake bacterial populations are dynamic. Ecological forces alter their community composition and evolutionary processes shape their genomes. In this presentation\, recent findings made possible through a 20-year time series of metagenomic data generated from Lake Mendota\, Madison\, WI will be shared. This study used genome-resolved approaches to examine how population-level diversity changes over time scales from weeks to decades. Results show that aquatic invasive species are restructuring the lake foodweb\, with cascading effects on lake bacteria. Climate change is impacting the populations\, through variation in precipitation patterns and intensity. This unprecedented dataset allows us to view lake bacteria through a genomics lens\, revealing the interacting forces of evolution and ecological drivers. \n\n  \n  \nThe Spring 2025 Freshwater Colloquium series will be held in the GLRF Ballroom. Most talks will involve the theme of Emerging Contaminants in Aquatic Environments. Snacks will be available prior to the talk. Please join us! \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n \n\nSpring 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-ecogenomics-of-freshwater-lake-bacteria/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250307T110000 DTEND;TZID=America/Chicago:20250307T140000 DTSTAMP:20260513T193001 CREATED:20250203T181154Z LAST-MODIFIED:20250205T195216Z UID:10000141-1741345200-1741356000@uwm.edu SUMMARY:School of Freshwater Sciences Career & Networking Fair DESCRIPTION:We are excited to invite you to participate in the upcoming Career & Networking Fair at UWM School of Freshwater Sciences. \nThe event will be held on Friday\, March 7 from 11:00am-2:00pm at the School of Freshwater Sciences. Undergraduates\, graduates\, and alumni from all UWM programs are invited to participate. The event will consist of a 1-hour speaker panel\, followed by a 2-hour networking event. \nNot looking for a new job? No problem! We welcome everyone to use this event as a networking opportunity and a chance to make new connections. \nWhy attend? \n1. Discover a wide range of internship and career opportunities in your field on interest.\n2. Engage with representatives from diverse industries to find the perfect match for your skills and aspirations.\n3. Connect with professionals and build relationships that could open doors for future opportunities.\n4. Submit your resume to potential employers and explore internship\, part-time\, and full-time job opportunities. \nIf you have any questions please contact Aaron Thiel\, thiela@uwm.edu. \n*Limited transportation will be available from the Student Union to the School of Freshwater Science \nRegister to attend on Handshake. URL:https://uwm.edu/freshwater/event/school-of-freshwater-sciences-career-networking-fair/ LOCATION:Great Lakes Research Facility\, Rm 3080\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Atmospheric Science,Career and Leadership Development,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250303T150000 DTEND;TZID=America/Chicago:20250303T155000 DTSTAMP:20260513T193001 CREATED:20250225T180307Z LAST-MODIFIED:20250225T180307Z UID:10000146-1741014000-1741017000@uwm.edu SUMMARY:Freshwater Colloquium: Microscopy helps reveal how nanoparticulate iron from deep sea hydrothermal vents disperses into open ocean waters DESCRIPTION:Sarick Matzen will present “Microscopy helps reveal how nanoparticulate iron from deep sea hydrothermal vents disperses into open ocean waters” as part of the School of Freshwater Sciences Spring Colloquium.\n \n\nDr. Sarick Matzen is a soil and environmental geochemist specializing in better understanding trace metal cycling in environmental systems. He is an assistant professor in the Department of Earth and Environmental Sciences at the University of Illinois – Chicago. He received a BA in Environmental Science from Hampshire College (Amherst\, MA)\, a Ph.D. in Environmental Science\, Policy\, and Management at the University of California\, Berkeley\, and conducted NASA and NSF-funded postdoctoral work at the University of Minnesota. He draws on diverse research experiences\, including investigating nuclear waste disposal at Lawrence Livermore National Lab\, community-based soil remediation on urban farms in California\, cycling of limiting nutrients in Earth’s oceans\, and habitability of extraterrestrial ocean worlds\, to determine how the chemical form of contaminants and nutrients explains their landscape-scale transport. \nIron (Fe) is a necessary but often limiting nutrient for life on Earth. Supply by sediments and dust deposition are typically considered the main sources of iron to Earth’s oceans\, but recent advances suggest hydrothermal vents might also be an important source of bio-essential iron over the length scales of ocean basins. Dissolved iron concentrations in hydrothermal fluids are a million times those of surrounding ocean water. Most iron (>90%) precipitates close to vent sources\, but the international GEOTRACES program revealed signatures of hydrothermally-derived iron transported across deep ocean basins worldwide. However\, it remains unclear how this iron persists in the water column rather than being sequestered into sinking particles. Critical processes constraining the export of hydrothermal iron to open ocean waters occur within the first ~100 km of plume evolution. \nTo this end\, we compare hydrothermal plume particulate matter collected from the first 100 km of plumes in the low-sulfur\, high-oxygen Rainbow vent system (Mid Atlantic Ridge) and high-sulfur\, low-oxygen Endeavour vent field (Juan de Fuca Ridge\, North Pacific). We use a novel multimodal approach combining bulk to nano-scale synchrotron-based methods and electron microscopy. We show that plume chemistry affects the mineral phase of iron\, with iron(II) phases persisting longer in the high-sulfur\, low-oxygen Endeavour plume. Yet suspended particle morphology–nanoparticulate iron embedded in carbon matrices–is similar in both plumes. We explore carbon matrix chemistry and potential links to vent microbial communities. Co-located iron and carbon within marine particles drives export of iron from hydrothermal vents to open ocean waters and is a signature of nutrient-rich oceanic hydrothermal activity globally. \n\nThe Spring 2025 Freshwater Colloquium series will be held in the GLRF Ballroom. Most talks will involve the theme of Emerging Contaminants in Aquatic Environments. Snacks will be available prior to the talk. Please join us! \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n \n\nSpring 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-sarick-matzen/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250224T150000 DTEND;TZID=America/Chicago:20250224T155000 DTSTAMP:20260513T193001 CREATED:20250218T182504Z LAST-MODIFIED:20250218T182504Z UID:10000145-1740409200-1740412200@uwm.edu SUMMARY:Freshwater Colloquium: Data-Efficient Stream Nutrient Modeling: An Application of Data-driven Sparse Sensing DESCRIPTION:Wasif Bin Mamoon will present “Data-Efficient Stream Nutrient Modeling: An Application of Data-driven Sparse Sensing” as part of the School of Freshwater Sciences Spring Colloquium.\nWasif Bin Mamoon is a PhD candidate in Environmental and Water Resources specialization at Marquette University in Milwaukee\, WI. His research focuses on analyzing stream nutrient (Nitrogen and Phosphorus) dynamics and modeling stream nutrients. He received his BSc and MSc in Water Resources Engineering from Bangladesh University of Engineering and Technology (BUET)\, in 2019 and 2022\, respectively. Previously\, he was a research assistant at the Institute of Water and Flood Management in Bangladesh\, responsible for assessing the impacts of climate change and applying hydrologic and hydraulic models at the watershed scale. \n\nRegular estimation or monitoring of nutrient (i.e.\, nitrogen or phosphorus) concentrations and loads is necessary for assessing stream health and evaluating nutrient pollution mitigation programs. The state of science concludes that at least daily monitoring is necessary. However\, current nutrient monitoring programs involve either infrequent grab samples or costly\, maintenance-intensive in-situ sensors\, resulting in low sampling frequencies and high uncertainties. To address this\, improved stream nutrient monitoring and modeling methods are needed. Data-driven Sparse Sensing (DSS) offers an efficient solution by reliably estimating high-frequency time series from fewer samples\, leading to more efficient sampling designs. This study applies the DSS technique to estimate stream nutrient concentrations and loads (nitrate-nitrite as NOx and phosphorous as P) using sparse measurements of nutrient concentrations and flows. The overall aim is to evaluate how DSS can identify the informative sampling times and locations and reconstruct concentration (NOx and TP) time series with minimal measurements. Furthermore\, this study examines the model’s sensitivity to the size of training data\, time span of monitored data\, and hydrologic regions. This method has a high potential to reduce the cost and effort of nutrient monitoring programs and assessments of catchment material balances. \n\nThe Spring 2025 Freshwater Colloquium series will be held in the GLRF Ballroom. Most talks will involve the theme of Emerging Contaminants in Aquatic Environments. Snacks will be available prior to the talk. Please join us! \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n \n\nSpring 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-data-efficient-stream-nutrient-modeling-an-application-of-data-driven-sparse-sensing/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250218T120000 DTEND;TZID=America/Chicago:20250218T130000 DTSTAMP:20260513T193001 CREATED:20250203T214341Z LAST-MODIFIED:20250203T214716Z UID:10000142-1739880000-1739883600@uwm.edu SUMMARY:Great Lakes Freshwater Symposium: Monitoring and Controlling Invasive Species in the Great Lakes DESCRIPTION:What do sea lamprey\, zebra and quagga mussels\, round goby\, and phragmites all have in common? They have invaded the Great Lakes and are changing the entire ecosystem. \nJoin the Freshwater Collaborative for a webinar that highlights some of the current research around monitoring and controlling invasive species in the Great Lakes. Our own Harvey Bootsma\, Associate Dean & Professor\, will be a panelist. \nOther panelists include: \n\n\n\n\n\n\n\n\nHarvey Bootsma\, Associate Dean & Professor\, University of Wisconsin-Milwaukee School of Freshwater Sciences\nJanice Gilbert\, Executive Director\, Invasive Phragmites Control Centre\, Ontario\nSara Good\, Professor of Genetics and Genomics\, University of Winnipeg\nSteve Pothoven\, Fishery Biologist\, NOAA GxLERL Lake Michigan Field Station\, Michigan URL:https://uwm.edu/freshwater/event/great-lakes-freshwater-symposium-monitoring-and-controlling-invasive-species-in-the-great-lakes/ LOCATION:Virtual CATEGORIES:Atmospheric Science,Faculty and Staff,Lectures Conferences and Symposiums,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250217T150000 DTEND;TZID=America/Chicago:20250217T155000 DTSTAMP:20260513T193001 CREATED:20250210T210120Z LAST-MODIFIED:20250210T210120Z UID:10000144-1739804400-1739807400@uwm.edu SUMMARY:Freshwater Colloquium: Oceanography for the Limnologist\, and Vice-Versa DESCRIPTION:John Janssen will present “Oceanography for the Limnologist\, and Vice-Versa” as part of the School of Freshwater Sciences Spring colloquium.\nDr. Janssen is Professor Emeritus\, School of Freshwater Sciences. \nThere is a major international journal called LIMNOLOGY AND OCEANOGRAPHY\, but few limnologists read any oceanography and vice-versa. That leads to missed opportunities. Please join us to hear Dr. Janssen’s insights on possible cross-disciplinary research and understanding. \n\n\nThe Spring 2025 Freshwater Colloquium series will be held in the GLRF Ballroom. Most talks will involve the theme of Emerging Contaminants in Aquatic Environments. Snacks will be available prior to the talk. \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n \n\nSpring 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-oceanography-for-the-limnologist-and-vice-versa/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250210T150000 DTEND;TZID=America/Chicago:20250210T155000 DTSTAMP:20260513T193001 CREATED:20250204T222644Z LAST-MODIFIED:20250204T222644Z UID:10000143-1739199600-1739202600@uwm.edu SUMMARY:Freshwater Colloquium: PFAS in Wisconsin Surface Water DESCRIPTION:Patrick Gorski will present “PFAS in Wisconsin Surface Water” as part of the School of Freshwater Sciences Spring colloquium.\nDr. Gorski is an Emerging Contaminants Research Scientist at the WDNR in the Bureau of Water Quality. He coordinates statewide surface water monitoring of PFAS in the state and his research focus is PFAS in surface water\, fish tissue and fate and transport issues. He received his PhD from UW-Madison studying mercury bioavailability and bioaccumulation in freshwater systems. Previously\, for 13 years he was an Assistant Scientist and Supervisor at the WI State Laboratory of Hygiene. \n\nIn this talk\, Dr. Gorski will discuss the breadth of PFAS concentrations found throughout the state and give a relative sense of what high and low PFAS concentrations are. He will also highlight specific sites where the DNR has done further study. For the second part\, he will discuss research topics that are being looked into\, such as the vertical distribution of PFAS in the vertical water column of a lake\, development of a PFAS filtration method\, PFAS bioaccumulation in the Madison Lakes\, and what we know about PFAS in sediments and sediment porewater. \n\nThe Spring 2025 Freshwater Colloquium series will be held in the GLRF Ballroom. Most talks will involve the theme of Emerging Contaminants in Aquatic Environments. Snacks will be available prior to the talk. Please join us! \n\n\nThis presentation is open to students\, faculty\, staff\, alumni and the public. \n\n\n\n\n \n\nSpring 2025 Colloquium Series schedule. The Colloquium series creates a platform where students\, faculty\, and scientists discuss emergent issues related to freshwater science research. Invited speakers present specific topics of their research\, as well as policy\, commercial\, and industrial experiences. Everyone is welcome. URL:https://uwm.edu/freshwater/event/freshwater-colloquium-pfas-in-wisconsin-surface-water/ LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Career and Leadership Development,Faculty and Staff,Lectures Conferences and Symposiums,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250202T140000 DTEND;TZID=America/Chicago:20250202T160000 DTSTAMP:20260513T193001 CREATED:20250124T220959Z LAST-MODIFIED:20250128T171115Z UID:10000140-1738504800-1738512000@uwm.edu SUMMARY:SFS & Milwaukee Panthers Basketball Event DESCRIPTION:Join the School of Freshwater Sciences and Milwaukee Athletics for a Panther Pride event on Sunday\, February 2nd as the Panthers take on Purdue Fort Wayne. The game tips off at 2 pm at UWM Panther Arena.  \n\n\nScore your seats now! The School of Freshwater Sciences has seats blocked just for us. Students\, faculty and staff can claim one FREE ticket and purchase additional tickets at $11 each! Offer available while seats last. (Select a seat to see the free ticket option) \n\n\nFeb 02\, 2025 2:00 PM CST \n\n\nUW-Milwaukee Panther Arena\n400 W Kilbourn Ave.\, Milwaukee\, WI 53203 \n\n\nA complimentary shuttle is available for UWM students from campus to the Panther Arena. \n\n\nReserve your tickets here: UWM School of Freshwater Sciences tickets \n\n\nIt should be an exciting game\, and we are looking forward to connecting with you as we cheer on the Panthers! URL:https://uwm.edu/freshwater/event/sfs-milwaukee-panthers-event/ LOCATION:UWM Panther Arena\, 400 W Kilbourn Ave\, Milwaukee\, WI\, 53203\, United States CATEGORIES:Atmospheric Science X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241219T170000 DTEND;TZID=America/Chicago:20241219T200000 DTSTAMP:20260513T193001 CREATED:20241216T150732Z LAST-MODIFIED:20241216T150804Z UID:10000139-1734627600-1734638400@uwm.edu SUMMARY:Seas & Greetings: A Winter Celebration DESCRIPTION:SFS Events Committee hosts our annual holiday party. \nActivities include presents for the kids\, a potluck dinner\, and a white elephant gift exchange. Donations for Hunger Task Force and the Career Closet will be collected. \nRSVP here! URL:https://uwm.edu/freshwater/event/seas-greetings-a-winter-celebration/ LOCATION:School of Freshwater Sciences\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Atmospheric Science X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241213T100000 DTEND;TZID=America/Chicago:20241213T110000 DTSTAMP:20260513T193001 CREATED:20241203T155906Z LAST-MODIFIED:20241203T160326Z UID:10000137-1734084000-1734087600@uwm.edu SUMMARY:SFS Graduates & Awards Celebration DESCRIPTION:Join us on Friday\, December 13\, 2024 as we recognize graduating students and scholarship/award recipients in the School of Freshwater Sciences. \nWe will meet in GLRF 3080 at 10-11am for a presentation\, bagels and coffee\, and a short break before exam week. \nSFS students\, faculty\, staff and their guests are welcome to attend. RSVP is appreciated. URL:https://uwm.edu/freshwater/event/sfs-graduates-awards-celebration/ LOCATION:Great Lakes Research Facility\, Rm 3080\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Atmospheric Science X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241107T170000 DTEND;TZID=America/Chicago:20241107T190000 DTSTAMP:20260513T193001 CREATED:20241105T202003Z LAST-MODIFIED:20241105T202003Z UID:10000135-1730998800-1731006000@uwm.edu SUMMARY:UWM Graduate School Open House DESCRIPTION:Interested in pursuing a graduate degree at the School of Freshwater Sciences? Join us at the UWM Graduate School Open House! \nRepresentatives from the School of Freshwater Sciences will be available to answer questions on our degree programs. \nVisit the Graduate School website for more details on this in-person event: Open House – Graduate School \n  URL:https://uwm.edu/freshwater/event/uwm-graduate-school-open-house/ LOCATION:Wisconsin Room\, UWM Student Union\, 2200 E Kenwood Blvd\, Milwaukee\, WI\, 53211\, United States X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241018T150000 DTEND;TZID=America/Chicago:20241018T180000 DTSTAMP:20260513T193001 CREATED:20240913T191340Z LAST-MODIFIED:20240918T183250Z UID:10000132-1729263600-1729274400@uwm.edu SUMMARY:Freshwater Science Preview Day for High School Students DESCRIPTION:Are you passionate about saving the planet’s most precious resource? Do you dream of a career in marine biology\, aquatic science\, ecosystem research\, or environmental science? \nIf so\, don’t miss out! We invite you to attend UW-Milwaukee’s Freshwater Sciences Preview Day on Friday\, October 18 from 3:00pm-6:00pm at the Great Lakes Research Facility\, home of the renowned School of Freshwater Sciences. \nWhat to expect day of: \n\nMeet internationally recognized faculty and research scientists\nGet personalized advice from our academic advisor\nParticipate in hands-on activities and tour our state-of-the-art research facility\nLearn about career paths and future opportunities in freshwater and environmental sciences\n\n\n*Close-toed shoes are required.* \n​ URL:https://uwm.edu/freshwater/event/freshwater-science-preview-day-for-high-school-students/ LOCATION:Great Lakes Research Facility\, Rm 3080\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Prospective Students,Public,Students,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241015T173000 DTEND;TZID=America/Chicago:20241015T183000 DTSTAMP:20260513T193001 CREATED:20241015T151904Z LAST-MODIFIED:20241015T151920Z UID:10000133-1729013400-1729017000@uwm.edu SUMMARY:Milwaukee Meteorologist Panel DESCRIPTION:Join us for the Milwaukee Meteorologist Panel presented by the Atmospheric Club at UWM! \nTuesday\, October 15\, 2024\, at 5:30 pm\, Lubar Hall S151\, UW-Milwaukee \nPanelists:\nShayna Fever\, Trinity Consultants\, Environmental Engineer Consultant \nSam Kuffel\, CBS 58\, Broadcast Meteorologist \nAndrew Quigley\, NWS Milwaukee-Sullivan\, Operational Meteorologist \nIf you’re interested in career paths within the atmospheric sciences\, this is a great opportunity to ask your questions & make connections with professionals in the field. Our panelists specialize in broadcasting\, operations/forecasting\, and air pollution/environmental engineering. We will have refreshments available following the panel. URL:https://uwm.edu/freshwater/event/milwaukee-meteorologist-panel/ LOCATION:UWM Lubar Hall S151\, 3202 N Maryland Ave\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Alumni & Community,Atmospheric Science,Career and Leadership Development,Faculty and Staff,UWM Campus Events X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20240929T110000 DTEND;TZID=America/Chicago:20240929T150000 DTSTAMP:20260513T193001 CREATED:20240904T202534Z LAST-MODIFIED:20240924T141655Z UID:10000130-1727607600-1727622000@uwm.edu SUMMARY:School of Freshwater Sciences Open House at Harbor Fest 2024 DESCRIPTION:The School of Freshwater Sciences will host an open house during Harbor Fest on Sunday\, September 29\, from 11am-3pm. \nHarbor Fest\, in its ninth year\, brings more than 5\,000 people to Harbor Plaza and Greenfield Avenue for a free\, family-friendly celebration of all things fish\, water and boats! There are things happening all day: free boat tours of the river and Lake Michigan\, live music\, great local food\, and more! In partnership with other nonprofits there are also fun things happening – Riveredge Nature Center has a baby sturgeon release called Sturgeon Fest\, there will be a STEM Stage for kids\, and UWM School of Freshwater Sciences will both be hosting open house events on the 1st floor of our Great Lakes Research Facility. Details at https://harbordistrict.org/harbor-fest/ URL:https://uwm.edu/freshwater/event/freshwater-sciences-open-house-at-harbor-fest-2024/ LOCATION:School of Freshwater Sciences\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204 CATEGORIES:Alumni & Community,Arts and Culture,Atmospheric Science,Faculty and Staff,Prospective Students,Public,Student Life,Students,UWM Campus Events ORGANIZER;CN="Harbor District":MAILTO:info@harbordistrict.org X-TRIBE-STATUS: END:VEVENT END:VCALENDAR